Automotive connector is a component that electronic engineers often contact. Its function is very simple: in the circuit is blocked or isolated between the circuit, set up a communication bridge, so that the current flow, so that the circuit to achieve the desired function. Automobile connector forms and structures are ever-changing, which is mainly composed of four basic structural components, respectively: contact, housing (depending on the variety), insulation, accessories. In the industry is usually called sheath, connector, plastic case, etc.
Basic components of automobile connectors
There are nearly 100 kinds of connectors used in general cars, and there are about hundreds of connectors used by a single model. With the increasing demand for safety, environmental protection, comfort and wisdom of automobiles, the application of automotive electronic products is increasing day by day, which will make the number of automotive connector applications present an increasing situation.
Four basic structural components of automotive connectors
First, contact parts
It is the core part of automobile connector to complete the electric connection function. Generally, the contact pair is composed of positive contact and negative contact, and the electrical connection is completed by inserting the male contact and the female contact. Positive contact parts for rigid parts, its shape is cylindrical (round pin), square cylindrical (square pin) or flat (insert). Positive contact parts are generally made of brass and phosphor bronze.
The negative contact, namely the jack, is the key part of the contact pair. It relies on the elastic structure to produce elastic deformation when it is inserted with the pin and the elastic force forms close contact with the positive contact to complete the connection. There are many kinds of jack structure, cylinder type (split groove, shrinkage mouth), tuning fork type, cantilever beam type (longitudinal slotting), folding type (longitudinal slotting,9 shape), box (square jack) and hyperboloid wire spring jack.
Second, the shell
Also known as a housing, it is the outer cover of an automotive connector that provides mechanical protection for the built-in insulating mounting plate and pins, and provides the proper alignment of plug and socket inserts to secure the connector to the device.
Three, insulation
Insulators, also known as automotive connector bases (bases) or insert plates, are used to arrange contacts in the desired position and spacing and to ensure insulation between contacts and between contacts and housing. Good insulation resistance, voltage resistance and machinability are the basic requirements for insulating materials.
Fourth, the attachment
Accessories are divided into structural accessories and installation accessories. Structural accessories such as clamping ring, positioning key, positioning pin, guide pin, connecting ring, cable clamp, sealing ring, sealing gasket, etc. Installation accessories such as screws, nuts, screws, spring rings, etc. Accessories are mostly standard parts and common parts. It is these four basic structural components that enable automotive connectors to act as Bridges and operate stably.
Automotive connector application characteristics
From the purpose of the use of automotive connectors, in order to ensure better driving of the car, we can divide the reliability of the connector into the connector in use of the closure, the performance of the car in the driving fire flower, in addition to the driving of the car, the connector can also show the shielding performance and temperature control performance. In general, when discussing the closure of the automobile connector, the sealing performance of the automobile is not only for water. In this field, the current international popular management standard is IP67, which is also the highest level in the automobile closed industry. Although the waterproof requirements are different in different parts of the car, many automobile manufacturers will choose IP67 to ensure the airtight performance of their car connectors.
In the running of a car, power supply is a very important energy source, not only related to the normal operation of the engine, but also people in the process of driving, often involved in the use of power supply. So in the power supply system of the car, the car connector has different divisions, between the male connector and the device, between the male connector and the cable, between the male and female connector, and between the female connector and the cable have a certain closure measures can be implemented.
In the realization of automotive connector sealing performance, sealing ring is a common tool, this tool can not only achieve the effect of fixing between different holes, but also to achieve the effect of sealing. It can not only ensure the stable operation of automobile equipment, but also ensure the waterproof performance of automobile equipment in work. Sealing ring in the production of most will use silicone rubber this material, this material is made by liquid silicon and solid silicon after certain chemical changes.
Now in the use of the car, electronic circuit technology is an important aspect of the automobile industry, not only in the driver entertainment, but also including the driver in driving the control system of the car, electronic circuit technology has played an important role in the stable work of the car. In order to ensure that the electronic circuit technology can work stably, people now use a lot of shielding technology in the production of cars. These shielding technologies not only play a protective role in the electronic circuit of the car, but also play an anti-interference and anti-radiation ability in the parts of the car, in addition to the stable work of the car connector can also play a protective effect. These shielding technologies in automobiles can be divided into two types: inner shielding and outer shielding.
When using external shielding to protect automobile connectors, two identical shielding shells are usually assembled together to form a shielding layer, and the length of the shielding layer can cover the entire length of the connector, and the shielding shell must ensure that there is enough lock structure to ensure the reliable installation of the shielding layer. In addition, the shielding material used should not only be treated by electroplating, but also be treated to prevent chemical corrosion.
The future of automotive connectors
At present, the global automotive connector industry accounts for about 15%, the future is expected to be driven by automotive electronic products, occupy a larger proportion. In terms of product cost structure, the average connector cost of each car is only a few hundred yuan, and the connector cost of each foreign car is about $125 ~ $150, the automotive connector market has great potential for development. There will be 600 to 1,000 electronic connectors per car, far more than are used today.
China is expected to become an important production base of global automotive connectors in the future. In addition to the existing well-known international factories, other manufacturers that have not set up factories in China will gradually set up production bases in China to supply the needs of local auto component manufacturers due to the increasing local demand, local procurement, cost advantages and other factors. Therefore, in the future, China's auto connector industry will be a very competitive market between foreign enterprises and Chinese local enterprises! Under the development of foreign and local enterprises, China will become one of the important production countries of automobile linker. In the future, local enterprises, foreign-funded enterprises, foreign-funded enterprises who will become the overlord of China's automobile connector, we wait and see.
